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. O. MOORE Pressure Regulator for Air, &c.

No, 234,051. Patented Nov. 2,1880.

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.mznessw NPETERS. FHOTO-UTNOGRAPH UNITED STATES PATENT OFFICE.

CHARLES MOORE, OF NEW YORK,

N. Y., ASSIGNOR T0 HENRY C. SERGEANT AND GEORGE R. CULLINGWORTH, OF SAME PLACE.

PRESSURE-REGULATOR FOR AIR, 80c.

SPECIFICATION forming part of Letters Patent No. 234,051, dated November 2, 1880. Application filed March 30, 1880. (N0 model.)

To all whom it may concern:

Be it known that I, CHARLES MOORE, of the city of New York, in the county and State of New York, have invented a certain new and useful Improvement in Pressure-Regulators for Air, Gas, 800., of which the following is a specification.

My invention consists in the combination, in a pressure-regulator for air or gas, of a chamher, abridge-piece extending across said chamber, a receiving passage or duct and a delivery passage or duct in said bridge-piece, a valve adapted to close against the mouth of the said receiving passage or duct, a diaphragm in said chamber, rods connecting said valve and diaphragm and extending ,upon opposite sides of said bridge-piece, and a spring and adjusting-nut for setting the regulator to the desired pressure.

In the accompanying drawings, Figure lrepresents a central vertical section of a regulator embodying my improvements, and Fig. 2 represents a corresponding section on the dotted line 00 :10, Fig. 1.

Similar letters of reference designate corresponding parts in both the figures.

A designates the chamber of the regulator, provided with a receiving duct or passage, a, for the entrance of air or gas, and a delivery duct or passage, b, for the outflow of air or gas. As here represented, both of said ducts or passages pass outside the chamber through screw-threaded hubs B to facilitate the connection of air or gas pipes, and the inner portions of both are formed or contained in a bridge piece, 0, which extends across the chamber, but which is of small diameter, so as to allow a plentiful circulation of air or gas around it.

D designates a valve arranged in the chamber A and adapted to seat against the inner mouth. of the receiving duct or passage a.

E designates adiaphragm, of flexible material, extending across the chamber A and adapted to be acted upon by the air or gas con- 5 tained in said chamber to close said valve.

F designates a spring arranged to act upon the side of the diaphragm opposite to that acted on by the air or gas, and having atendency to open the valve D to permit the passage of air or gas through the regulator.

The diaphragm E is connected to the valve D by means of a yoke formed by rods 0, arranged one on each side of the bridge-piece C. In order to provide for properly regulating the degree of pressure which the regulator is in tended to maintain, I provide for increasing or diminishing the resilience of the spring F, and, as here represented, this is done by means of a screw-plug, G, which is made hollow to re- 66 ceive the spring F, and screws into the cap or bonnet H of the regulator.

I designates a stem or rod extending upward from the diaphragm E through the plug G, and serving to properly center and guide the valve D and other parts in their movements.

As the valve D moves with the pressure instead of against it in opening, the regulator is much more sensitive to slight variations in pressure. 70

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the chamber A, the bridge-piece C, the receiving-duct a and delivery-duct b in said bridge-piece, the valve D, adapted to close against the mouth of the duct a, the diaphragm E, the rods 0, connecting said valve and diaphragm, the spring F, and screwnut G, all substantially as specified.

' CHARLES MOORE. 

